U.S. patent number 5,292,175 [Application Number 07/939,521] was granted by the patent office on 1994-03-08 for inflatable child vehicle seat.
This patent grant is currently assigned to Babystar. Invention is credited to Lawrence Artz.
United States Patent |
5,292,175 |
Artz |
March 8, 1994 |
Inflatable child vehicle seat
Abstract
A child seat device, for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, has an
inflatable child seat which includes an inflatable bottom panel, an
inflatable back panel upstanding from the rear of the bottom panel,
and a pair of opposed, laterally spaced inflatable sidewall panels.
Each of the sidewall panels has a back portion projecting forwardly
from a respective side of the back panel and a bottom portion
projecting upwardly from a respective side of the bottom panel. An
inflatable brace, disposed in each of the sidewall panels
intermediate the back and bottom sidewall portions, limits pivotal
movement of the back and bottom sidewall portions towards each
other. Each of the braces defines a single interior air chamber
having at most limited gaseous communication with the bottom, back
and sidewall panels. A releasable harness maintains the torso of a
child intermediate the sidewall panels.
Inventors: |
Artz; Lawrence (Wilton,
CT) |
Assignee: |
Babystar (Brooklyn,
NY)
|
Family
ID: |
25473316 |
Appl.
No.: |
07/939,521 |
Filed: |
September 4, 1992 |
Current U.S.
Class: |
297/250.1;
297/452.41; 297/DIG.3 |
Current CPC
Class: |
B60N
2/2806 (20130101); B60N 2/2881 (20130101); B60N
2/2812 (20130101); Y10S 297/03 (20130101) |
Current International
Class: |
B60N
2/28 (20060101); B60N 2/26 (20060101); B60N
002/28 () |
Field of
Search: |
;297/250,DIG.3,484,467,468,454,250.1,452.41 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Grosz; Alexander
Attorney, Agent or Firm: Amster, Rothstein &
Ebenstein
Claims
I claim:
1. A child seat device for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, comprising:
(A) an inflatable child seat including
(i) an inflatable bottom panel;
(ii) an inflatable back panel upstanding from the rear of said
bottom panel;
(iii) a pair of opposed, laterally spaced inflatable sidewall
panels, each of said sidewall panels having a back portion
projecting forwardly from a respective side of said back panel and
a bottom portion projecting upwardly from a respective side of said
bottom panel; and
(iv) an inflatable bracing means, disposed in each of said sidewall
panels intermediate said back and bottom sidewall portions and
spaced from both said bottom panel and said back panel, for
limiting pivotal movement of said back and bottom sidewall portions
towards each other; and
(b) releasable harness means for maintaining the torso of a child
intermediate said sidewall panels.
2. The child seat device of claim 1 wherein each of said bracing
means is inflatable and defines a single interior air chamber
having at most limited gaseous communication with said bottom, back
and sidewall panels.
3. The child seat device of claim 1, wherein at least an upper
portion of said back panel is forcibly pivotable downward and
forward.
4. The child seat device of claim 1 wherein said bracing means
limit pivotal movement of said back and bottom panels toward each
other.
5. The child seat device of claim 2 wherein said bottom, back and
sidewall panels define a single interior panel air chamber.
6. A child seat device for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, comprising:
(A) an inflatable child seat including
(i) an inflatable bottom panel;
(ii) an inflatable back panel upstanding from the rear of said
bottom panel;
(iii) a pair of opposed, laterally spaced inflatable sidewall
panels, each of said sidewall panels having a back portion
projecting forwardly from a respective side of said back panel and
a bottom portion projecting upwardly from a respective side of said
bottom panel; and
(iv) an inflatable bracing means, disposed in each of said sidewall
panels intermediate said back and bottom sidewall panels
intermediate said back and bottom sidewall portions, for limiting
pivotal movement of said back and bottom sidewall portions towards
each other, each of said bracing means being inflatable and
defining a single interior air chamber having at most limited
gaseous communication with said bottom, back and sidewall panels;
and
(B) releasable harness means for maintaining the torso of a child
intermediate said sidewall panels;
said bottom, back and sidewall panels defining a single interior
panel air chamber, and each of said bracing means air chambers,
once inflated, being independent of said panel air chamber.
7. The child seat device of claim 2 wherein said bottom, back and
sidewall panels and said bracing means are commonly inflatable.
8. A child seat device for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, comprising:
(A) an inflatable child seat including
(i) an inflatable bottom panel;
(ii) an inflatable back panel upstanding from the rear of said
bottom panel;
(iii) a pair of opposed, laterally spaced inflatable sidewall
panels, each of said sidewall panels having a back portion
projecting forwardly from a respective side of said back panel and
a bottom portion projecting upwardly from a respective side of said
bottom panel; and
(iv) an inflatable bracing means, disposed in each of said sidewall
panels intermediate said back and bottom sidewall panels
intermediate said back and bottom sidewall portions, for limiting
pivotal movement of said back and bottom sidewall portions towards
each other, each of said bracing means being inflatable and
defining a single interior air chamber having at most limited
gaseous communication with said bottom, back and sidewall panels;
and
(B) releasable harness means for maintaining the torso of a child
intermediate said sidewall panels;
said bottom, back and sidewall panels and said bracing means being
commonly inflatable, said bottom, back and sidewall panels being
commonly deflatable, and said bracing means being inflatable
independently of each other and said panels.
9. A child seat device for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, comprising:
(A) an inflatable child seat including
(i) an inflatable bottom panel;
(ii) an inflatable back panel upstanding from the rear of said
bottom panel;
(iii) a pair of opposed, laterally spaced inflatable sidewall
panels, each of said sidewall panels having a back portion
projecting forwardly from a respective side of said back panel and
a bottom portion projecting upwardly from a respective side of said
bottom panel, at least an upper portion of said back panel being
forcibly pivotable downward and forward;
(iv) an inflatable bracing means, disposed in each of said sidewall
panels intermediate said back and bottom sidewall portions, for
limiting pivotal movement of said back and bottom sidewall portions
towards each other, each of said bracing means defining a single
interior air chamber having at most limited gaseous communication
with said bottom, back and sidewall panels, said bracing means
limiting pivotal movement of said back and bottom panels towards
each other;
said bottom, back and sidewall panels defining a single interior
panel air chamber, and each of said bracing means air chambers,
once inflated, being independent of said panel air chamber; said
bottom, back and sidewall panels and said bracing means being
commonly inflatable, said bottom, back and sidewall panels being
commonly deflatable, and said bracing means being deflatable
independently of each other and said panels; and
(B) releasable harness means for maintaining the torso of a child
intermediate said sidwall panels.
10. The child seat device of claim 1 wherein each of said bottom
and back panels defines an aperture therethrough, and said harness
means is a continuous harness system including:
(i) first releasable strap means for maintaining the upper torso of
a child in said inflatable child seat intermediate said back
sidewall portions; and
(ii) second releasable strap means extending through both said back
panel aperture and said bottom panel aperture and passing
intermediate the legs of the child for maintaining the lower torso
of the child intermediate said bottom sidewall portions;
said first and second strap means being secured together at at
least one point.
11. A child seat device for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, comprising:
(A) an inflatable child seat including
(i) an inflatable bottom panel defining an aperture
therethrough;
(ii) an inflatable back panel upstanding from the rear of said
bottom panel and defining an aperture therethrough; and
(iii) a pair of opposed, laterally spaced inflatable sidewall
panels, each of said sidewall panels having a back portion
projecting forwardly from a respective side of said back panel and
a bottom portion projecting upwardly from a respective side of said
bottom panel; and
(B) a continuous harness system including
(i) first releasable strap means for maintaining the upper torso of
a child in said inflatable child seat intermediate said back
sidewall portions; and
(ii) second releasable strap means extending through both said back
panel aperture and said bottom panel aperture and passing
intermediate the legs of the child for maintaining the lower torso
of the child intermediate said bottom sidewall portions;
said first and second strap means being secured together at at
least one point.
12. The child seat device of claim 11 wherein said harness system
includes:
(i) first strap means extending in a horizontal plane around said
back panel intermediate said back and back sidewall panels, thereby
to encircle the upper torso of a child in said inflatable child
seat;
(ii) first fixture means for releasably fastening two portions of
said first strap means together across the chest of the child;
(iii) second strap means; and
(iv) second fixture means for releasably fastening two portions of
said second strap means together between the legs of the child;
said second strap means extending at least in a vertical plane from
said second fixture means downwardly through said bottom panel
aperture, then forwardly through said at least one back panel
aperture, and into said second fixture means, thereby to maintain
the lower torso of the child in said inflatable child seat;
said first and second strap means being fixedly secured together at
at least one point.
13. The child seat device of claim 11 wherein said second strap
means extends from said second fixture means downwardly through
said bottom panel aperture, rearwardly and around the intersection
of said bottom and back panels, upwardly and then forwardly through
said at least one back panel aperture, and downwardly into said
second fixture means.
14. The child seat device of claim 11 wherein a portion of said
second strap means extends vertically around said bottom panel and
intermediate said bottom and bottom sidewall panels and through
said second fixture means, thereby to assist in maintaining the
lower torso of the child intermediate said sidewall panels.
15. The child seat device of claim 11 wherein said inflatable child
seat additionally defines a plurality of passageways for passage
therethrough of said first and second strap means, thereby to
maintain each of said first and second strap means in the desired
orientation.
16. The child seat device of claim 11 wherein said second strap
means includes two lengths thereof extending from said second
fixture means downwardly through said bottom panel aperture, then
forwardly through said back panel aperture and downwardly into said
second fixture means, each of said lengths of said second strap
means being fixedly secured to a respective laterally spaced
portion of said first strap means.
17. The child seat device of claim 11 wherein said first and second
strap means are fixedly secured together in front of the chest of a
child in said inflatable child seat.
18. The child seat device of claim 11 wherein each of said first
and second strap means includes means for varying the effective
length thereof independently of the other of said strap means.
19. The child seat device of claim 11 wherein each of said sidewall
panels defines a passageway for passage therethrough of a vehicle
seatbelt.
20. A child seat device for use in a vehicle having a seatbelt for
securing the child seat device to the vehicle seat, comprising:
(A) an inflatable child seat including
(i) an inflatable bottom panel defining an aperture
therethrough;
(ii) an inflatable back panel upstanding from the rear of said
bottom panel and defining an aperture therethrough;
(iii) a pair of opposed, laterally spaced inflatable sidewall
panels, each of said sidewall panels having a back portion
projecting forwardly from a respective side of said back panel and
a bottom portion projecting upwardly from a respective side of said
bottom panel, each of said sidewall panels defines a passageway for
passage therethrough of a vehicle seatbelt; and
(iv) a plurality of passageways for passage therethrough of strap
means; and
(B) a continuous harness system including
(i) first strap means extending in a horizontal plane around said
back panel intermediate said back and back sidewall panels, thereby
to encircle the upper torso of a child in said inflatable child
seat;
(ii) first fixture means for releasably fastening two portions of
said first strap means together across the chest of the child;
(iii) second strap means; and
(iv) second fixture means for releasably fastening two portions of
said second strap means together between the legs of a child;
said second strap means extending at least in a vertical plane from
said second fixture means downwardly through said bottom panel
aperture, rearwardly and around the intersection of said bottom and
back panels, upwardly and then forwardly through said at least one
back panel aperture, and into said second fixture means, thereby to
maintain the lower torso of the child in said inflatable child
seat;
a portion of said second strap means extending vertically around
said bottom panel and intermediate said bottom and bottom sidewall
panels and through said second fixture means, thereby to assist in
maintaining the lower torso of the child intermediate said sidewall
panels;
said first and second strap means being fixedly secured together at
at least one point in front of the chest of a child in said
inflatable child seat, and passing through said strap means
passageways to maintain said strap means in a desired
orientation;
each of said first and second strap means including means for
varying the effective length thereof independently of the other cf
said strap means.
21. The child seat device of claim 20 wherein said second strap
means includes two lengths thereof extending from said second
fixture means downwardly through said bottom panel aperture, then
forwardly through said back panel aperture and downwardly into said
second fixture means, each of said lengths of said second strap
means being fixedly secured to a respective laterally spaced
portion of said first strap means.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat for children, and
more particularly, to such a seat which is inflatable and
deflatable.
Child vehicle seats are well known in the art and are designed to
accommodate and protect a child sitting in a vehicle. The seat is
disposed parallel to the motion of the vehicle--that is, it is
mounted on the car seat extending along a longitudinal axis of the
vehicle. Preferably, a child seat (as opposed to an infant seat) is
configured so that the child faces forwardly toward the front end
of the vehicle.
Conventional child vehicle seats are formed of cushioning or padded
material, either with or without a rigid frame for supporting the
same. Such a seat represents a compromise between the high level of
protection desirably afforded to the child in the event of an
accident, and the high level of comfort desirably provided for the
child during normal use of the seat (that is, when no accident is
imminent). Such a seat fails to provide the child with the highest
level of protection possible in the event of an accident because
the structure necessary to provide the highest level of protection
would be uncomfortable for the child during normal use of the
seat.
Another problem with the conventional child vehicle seats is that
they are bulky and heavy and thus difficult to store where storage
space is at a premium. Thus, while parents may provide their
vehicle with a child vehicle seat, when the child is taken for
rides in the vehicles of those who do not have a child vehicle
seat, the child is deprived of the extra protection afforded by a
child vehicle seat. For example, grandparents who only see the
child occasionally will probably not have such a seat in their
vehicle as a routine matter and may not have room for storage of
such a device within their home.
Accordingly, it is an object of the present invention to provide a
child vehicle seat device which, under normal driving conditions,
provides a maximum level of comfort to the child within, yet, in
the event of an accident, affords a maximum level of protection for
the child within, regardless of its comfort, during the instant of
the accident.
Another object is to provide such a device which is easily and
compactly stored when not in use.
A further object is to provide such a device which is economical to
manufacture and easy to maintain.
A still further object is to provide such a device which is light
in weight.
SUMMARY OF THE INVENTION
It has been found that the above and related objects of the present
invention are obtained in a child seat device for use in a vehicle
having a seatbelt for securing the child seat device to the vehicle
seat. The device comprises an inflatable child seat including an
inflatable bottom panel, an inflatable back panel upstanding from
the rear of the bottom panels, and a pair of opposed, laterally
spaced inflatable sidewall panels. Each of the sidewall panels has
a back portion projecting forwardly from a respective side of the
back panel and a bottom portion projecting upwardly from a
respective side of the bottom panel. The seat further includes
bracing means, disposed in each of the sidewall panels intermediate
the back and bottom sidewall portions, for limiting pivotal
movement of the back and bottom sidewall portions towards each
other, each of the bracing means preferably being inflatable and
defining a single interior air chamber having at most limited
gaseous communication with the bottom, back and sidewall panels.
The device also includes releasable harness means for maintaining
the torso of a child intermediate the sidewall panels.
In a preferred embodiment, at least an upper portion of the back
panel is forcibly pivotable downward and forwards, but the bracing
means limit pivotal movement of the back and bottom panels towards
each other. The bottom, back and sidewall panels define together a
single interior panel air chamber, and each of the bracing means
air chambers, once inflated, is independent of the panel air
chamber. The bottom, back and sidewall panels and the bracing means
are commonly inflatable. The bottom, back and sidewall panels are
commonly deflatable, and the bracing means are deflatable
independently of each other and the panels.
The present invention further encompasses a child seat device for
use in a vehicle having a seatbelt for securing the child seat
device to the vehicle seat. The device comprises an inflatable
child seat including an inflatable bottom panel defining an
aperture therethrough, an inflatable back panel upstanding from the
rear of the bottom panel and defining an aperture therethrough, and
a pair of opposed, laterally spaced inflatable sidewall panels.
Each of the sidewall panels has a back portion projecting forwardly
from a respective side of the back panel and a bottom portion
projecting upwardly from a respective side of the bottom panel. The
device also comprises a continuous harness system including first
releasable strap means for maintaining the upper torso of a child
in the inflatable child seat intermediate the back sidewall
portions, and second releasable strap means extending through both
the back panel aperture and the bottom panel aperture and passing
intermediate the legs of the child for maintaining the lower torso
of the child intermediate the bottom sidewall portions. The first
and second strap means are secured together at at least one
point.
In a preferred embodiment, the harness system includes first strap
means extending in a horizontal plane around the back panel
intermediate the back and back sidewall panels, thereby to encircle
the upper torso of a child in the inflatable child seat, and first
fixture means for releasably fastening two portions of the first
strap means together across the chest of the child. It further
includes second strap means and second fixture means for releasably
fastening two portions of the second strap means together between
the legs of the child. The second strap means extends at least in a
vertical plane from the second fixture means downwardly through the
bottom panel aperture, then forwardly through the at least one back
panel aperture, and into the second fixture means, thereby to
maintain the lower torso of the child in the inflatable child seat.
The first and second strap means are fixedly secured together at at
least one point.
Preferably, the second strap means extends from the second fixture
means downwardly through the bottom panel aperture, rearwardly and
around the intersection of the bottom and back panels, upwardly and
then forwardly through the at least one back panel aperture, and
downwardly into the second fixture means. Optimally, a portion of
the second strap means extends vertically around the bottom panel
and intermediate the bottom and bottom sidewall panels and through
the second fixture means, thereby to assist in maintaining the
lower torso of the child intermediate the sidewall panels.
The inflatable child seat optimally defines a plurality of
passageways for passage therethrough of the first and second strap
means, thereby to maintain each of the first and second strap means
in the desired orientation. The second strap means includes two
lengths thereof extending from the second fixture means downwardly
through the bottom panel aperture, then forwardly through the back
panel aperture and downwardly into the second fixture means, each
of the lengths of the second strap means being fixedly secured to a
respective laterally spaced portion of the first strap means. The
first and second strap means are fixedly secured together in front
of the chest of a child in the inflatable child seat.
Optimally, each of the first and second strap means includes means
for varying the effective length thereof independently of the other
of the strap means, and each of the sidewall panels defines a
passageway for passage therethrough of a vehicle seatbelt.
BRIEF DESCRIPTION OF THE DRAWING
The above and related objects, features and advantages of the
present invention, will be more fully understood by reference to
the following detailed description of the presently preferred,
albeit illustrative, embodiments of the present invention when
taken in conjunction with the accompanying drawing wherein:
FIGS. 1, 2 and 3 are side elevational, top plan and bottom plan
views, respectively, of a child seat device according to the
present invention;
FIGS. 4 and 5 are front elevational and rear elevational views
thereof, respectively;
FIG. 6 is a sectional view thereof taken along the line 6--6 of
FIG. 2 showing the device as secured to a vehicle seat by a
seatbelt and a child (illustrated in phantom line) disposed
therein;
FIG. 7 is a view similar to FIG. 6, but showing the device and
child during an abrupt stop of the vehicle;
FIG. 8 is a top plan view taken along the line 8--8 of FIG. 6, with
a portion of the seatbelt being cut away to reveal details of
internal construction;
FIG. 9 is a top plan view taken along the line 9--9 of FIG. 7,
similar to FIG. 8 but showing the device and child during an abrupt
stop;
FIG. 10 is a sectional view taken along the line 10--10 of FIG.
6;
FIG. 11 is a sectional view taken along the line 11--11 of FIG. 7,
similar to FIG. 10 but showing the device and child during an
abrupt stop; and
FIG. 12 is a rear elevational view of an alternative
embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawing, and in particular to FIGS. 1-5
thereof, therein illustrated is a child seat device according to
the present invention, generally designated by the reference
numeral 10. As best seen in FIG. 6, the device 10 is intended for
use in a vehicle (not shown) having a seatbelt 12 for securing the
device 10 to the vehicle seat (illustrated in phantom line) formed
by the generally horizontal bottom cushion 14 and the generally
vertical back cushion 16.
More particularly, the device 10 comprises an inflatable child seat
generally designated 20, including an inflatable bottom panel
generally designated 22, an inflatable back panel generally
designated 24 and upstanding from the rear of the bottom panel 22,
and a pair of opposed, laterally spaced, inflatable sidewall panels
generally designated 26. Each of the sidewall panels 26 has a back
portion 30 projecting forwardly from a respective side of the back
panel 24 and a bottom portion 32 projecting upwardly from a
respective side of the bottom panel 22. The bottom, back and
sidewall panels 22, 24, 26 define a single interior air chamber, as
best seen in FIG. 6.
However, as illustrated, the bottom panel 22 is preferably
subdivided into a series of three short, thick sub-chambers 22a and
a fourth sub-chamber 22b, which depends downwardly from the front
of the bottom panel 22, thereby to provide some support for the
calves of the child in the seat 20. Similarly, as also illustrated,
the back panel 24 is preferably divided into a series of three
short, thick sub-chambers 24a and a single somewhat wider chamber
24b disposed at the top of the back panel 24. Each of the
sub-chambers 22a, 22b of the bottom panel 22 are in gaseous
communication, and each of the sub-chambers 24a, 24b of the back
panel 24 are in gaseous communication. Furthermore, the sub-chamber
22a at the back of the bottom panel 22 and the sub-chamber adjacent
24a at the bottom of the back panel 24 are in gaseous
communication, thereby ensuring that all of the sub-chambers, 22a,
22b, 24a, 24b are in gaseous communication. As the short, thick
sub-chambers extending from one sidewall 26 to the other sidewall
26 are formed by well-known techniques, such as thermal or
ultrasonic welding, the gaseous communication between sub-chambers
is easily accomplished by limiting the length of the weld lines 34
so that they do not completely separate adjacent sub-chambers.
Clearly the panels 22, 24 may be comprised of a greater or lesser
number of sub-chambers. Preferably each sidewall panel 26 further
defines a shaping skirt 39 connecting one side of depending
sub-chamber 22b to the full length of the bottom panel 22.
The back and bottom sidewall portions 30, 32 are also in gaseous
communication with each other through intermediate or communicating
sidewall portions 26a. The sidewall panels 26 are secured to the
bottom and back panels 22, 24 by weld lines 36, but the weld lines
36 do not extend the full length of the intersection of the panels
22, 24 with the sidewall panel 26, so that there is gaseous
communication between the sidewall panels 26 and both the bottom
and back panels 22, 24. Accordingly, a single inflation valve 40
disposed on one of the sidewall panels 26 (or one of the other
panels) enables common inflation and deflation of the bottom, back
and sidewall panels 22, 24 and 26 (including the various
sub-chambers 22a, 22b, 24a, 24b).
The back panel 24 is substantially longer than the bottom panel 22
(that is, the back panel 24 extends vertically a distance greater
than the distance the bottom panel 22 extends forwardly), and there
is a tendency for at least the upper portion of the back panel 24
to be forcibly displaced forwardly and downwardly (towards the
bottom panel 22) when a vehicle makes an abrupt stop. This type of
forward and downward movement of the upper portion of back panel 24
compresses the child within the seat 20, and can apply undesirable
forces to the sensitive area of the child's neck. In a conventional
child seat having a rigid frame, the frame is designed to withstand
this collapsing motion. Even in a conventional child seat without a
frame, the padding or cushion material of which the sidewall panels
are formed limits the amount of collapsing movement that can occur
since the distribution of the cushion material within the seat is
substantially fixed and the cushioning material is compressible to
only a limited degree. On the other hand, in an inflatable child
seat, the air is highly compressible and capable of relocating
throughout the seat as necessary, so that this collapsing movement
poses a real problem.
Accordingly, in order to overcome this collapsing motion, the
present invention provides a bracing means 50, disposed in each of
the sidewall panels 26 intermediate the back and bottom sidewall
portions 30, 32, for limiting pivotal movement of the back and
bottom sidewall portions 30, 32 towards each other and hence
pivotal movement of the back and bottom panels 24, 22 towards each
other. Preferably, as illustrated, each of the bracing means 50 is
inflatable and defines a single interior air chamber having at most
limited gaseous communication with the common panel air chamber of
the bottom, back and sidewall panels 22, 24 and 26. When inflated,
each bracing means 50 is in the form of a cylinder, preferably with
hemispherical ends. As illustrated, each bracing means 50 has a
cylindrical cross section with semi-spherical ends extending
inwardly from the sidewall panel 26 toward the child at one end and
outwardly from the sidewall panel 26 at the other end. Other
regular geometric shapes may be employed, but preferably the
bracing means 50 occupies a substantial portion of the intersection
of the back and bottom sidewall portions 30, 32 without, however,
interfering with gaseous communication therebetween via the
intermediate sidewall panel portions 26a. If desired, a
non-inflatable bracing means may be employed instead of the
inflatable bracing means--e.g., a rigid metal or plastic member
disposed intermediate the back and bottom sidewall portions to
preclude buckling. In this case the rigid bracing means should be
small enough that it does not interfere with the compact folding of
the deflated seat 20.
As noted, the bracing means 50 has, at most, limited gaseous
communication with the panels 22, 24, 26. In the preferred
embodiment illustrated in FIG. 6, a one-way inflation-only valve
50a extends from each sidewall panel 26 into its respective bracing
means 50 to permit the bracing means 50 to be commonly inflated
with the bottom, back and sidewall panels 22, 24, 26. Valve 50a is
shown as a collapsible valve which is open only when the air
pressure in the sidewall panel 26 is greater than the pressure
within the bracing means 50; the air pressure "opens" the
collapsible valve 50a so that, under the pressure differential, air
passes from the sidewall panel 26 into the bracing means 50.
However, once the pressure within the bracing means 50 is as high
as the pressure within the sidewall panel 26, this pressure
collapses and "closes" the valve 50a and thereby terminates gaseous
communication between the sidewall panel 26 and the bracing means
50 until the sidewall panel pressure again exceeds the bracing
means pressure. Such collapsible one-way inflation-only valves are
well known in the inflatable arts.
As the panels are being inflated via the panel valve 40, the
bracing means 50 is inflated to a similar pressure. Once inflated,
however, the bracing means air chamber is essentially independent
of the panel air chambers due to collapse of the valve 50a. Thus,
while the back, bottom and sidewall panels 22, 24, 26 are commonly
deflatable via the valve 40, the bracing means 50 are not
deflatable via the valve 40. Instead they are deflatable only via
their own deflation valves 50b, independently of each other and of
the panels. If desired, the one-way inflation-only collapsible
valve 50a and the one-way deflation-only valve 50b may be dispensed
with, and each bracing means 50 may be inflatable and deflatable
only via its own two-way inflation/deflation valve.
In order to maintain the child within the child seat 20, both
against the natural inclination of a child to wander out of any
seat and against the inertial forces acting to drive the child out
of the seat during an abrupt stop of the vehicle, a releasable
harness means is provided for maintaining the torso of the child
within the seat 20 and more particularly between the sidewall
panels 26 thereof. The continuous harness system used for this
purpose includes first releasable strap means, generally designated
60, for maintaining the upper torso of the child in the inflatable
child seat intermediate the back sidewall portions 30, and second
releasable strap means, generally designated 62, for maintaining
the lower torso of the child intermediate the bottom sidewall
portions 32. To this end, the bottom panel 22 defines a bottom
panel aperture 64 therethrough and the back panel 24 defines at
least one, and preferably two, horizontally spaced back panel
apertures 66 therethrough. Thus, the second strap means 62 extends
behind the seat 20 between the bottom panel aperture 64 and the
back panel apertures 66, as best seen in FIGS. 1 and 3, and from
the bottom panel aperture 64, in front of the seat intermediate the
legs of the child and over its shoulders to the back panel
apertures 66, as best seen in FIGS. 2 and 4.
Additionally, each weld line 36 between a sidewall panel 26 and the
bottom and back panels 22, 24 is interrupted to define two slots or
passageways 69, one slot 69 intermediate the bottom panel 22 and
the bottom sidewall portion 32 and one slot 69 intermediate the
back panel 24 and the back sidewall portion 30. These slots 69
enable passage of a strap means 60, 62 therethrough and act to
maintain each of the strap means in the desired orientation.
More particularly, the first strap means 60 extends in a horizontal
plane about the back panel 24, passing through slots 69
intermediate the back panel 24 and the back sidewall panels 30,
thereby to encircle the upper torso of a child in this seat 20. A
first fixture means 70, such as a conventional, releasable fastener
or buckle 70, is provided for releasably fastening the two
functional end portions of the first strap means 60 together across
the chest of the child. The physical ends of the first strap means
60 are typically secured to a conventional length-adjusting
mechanism 72 (as illustrated in FIG. 3).
A second fixture means, generally designated 74, is provided for
releasably fastening the two functional end portions of the second
strap means 62 together between the legs of the child. Each of the
releasable fixture means 70, 74 typically contains a simple release
button or like mechanism which, when depressed, squeezed or
otherwise activated, releases the intercoupled portions of the
fixture means. The physical ends of the second strap means 62 are
typically secured together by a conventional length-adjusting
mechanism 76 (as illustrated in FIG. 3). The second fixture means
74 is illustrated as including a female member 80 associated with
one functional end portion of the second strap means 62 and
configured and dimensioned to receive and engage two separate male
portions 82 associated with the other functional end portion of the
second strap means 62. The female member 80 is engaged by a portion
62a of the second strap means 62 passing intermediate the legs of
the child, while the male members 82 are each engaged by one of the
shoulder portions 62b of the second strap means 62 descending from
the back panel apertures 66 downwardly over the chest of the
child.
The path of the second strap means 62 extends at least in a
vertical plane from the second fixture means 74 (and, in
particular, the female member 80 thereof) downwardly through the
bottom panel aperture 64 and then, after passing upwardly behind
the seat 20, forwardly through the two back panel apertures 66 and
then downwardly and inwardly through the male members 82 of buckle
74. Typically, as illustrated, the second strap means 62 includes
two overlapping lengths 62a thereof which overlap in the regions in
front of the seat between the female member 84 and the bottom panel
aperture 64 and behind the seat from the bottom panel aperture 64
to the length-adjusting mechanism 76 (see FIGS. 2 and 3) and two
divergent or substantially non-overlapping lengths 62b which extend
behind the seat upwardly from the length-adjusting mechanism 76
through their respective back panel apertures 66 and then
downwardly in front of the seat from their respective back panel
apertures 66 to where they engage the male members 82 of buckle
74.
The male members 82 of buckle 74 may be fixedly engaged to the
second strap lengths 62b and the harness 62 will adequately perform
its function. However, in the preferred embodiment of the present
invention illustrated, the lengths 62b extend slidably through the
male members 82 of buckle 74 to form a portion 62c of the second
strap means 62, which portion 62c extends vertically about the
bottom panel 22. More particularly, the second strap means portion
62c extends downwardly and outwardly from one male member 82,
passes outwardly through one slot 69 intermediate the bottom panel
22 and the bottom sidewall panel 32, extends across the bottom
panel 22 under the seat 20, passes inwardly through the other slot
69, and then through the other male member 82, thereby to further
assist in maintaining the lower torso of the child intermediate the
sidewall panels 26. The two ends of the second strap means portion
62c are preferably slidable relative to the male members 82 of
buckle 74, but alternatively may be fixedly secured thereto, if
desired.
The first and second strap means 60, 62 are fixably secured
together (e.g., by stitching, fasteners, or the like) at at least
one point 92, and preferably two points 92, so that the strap means
60, 62 of the harness are continuous and the first harness 60
maintains a desirable spacing of the second strap lengths 62b over
the front of the child s chest. The strap means 60, 62 are formed
of a strong, flexible material such as reinforced fabric.
It will be appreciated that the overall lengths of the first and
second strap means 60, 62 are independently adjustable by means of
their respective length-adjusting mechanisms 72, 76. To provide for
further flexibility, however, in addition to the back panel
apertures 66 already described, an additional pair of back panel
apertures 66a may be provided below the apertures 66 so that the
second strap means 62 may be passed through the second pair of back
panel apertures 66a for a smaller child, the slack thus created in
second strap means 62 being taken up by means of the
length-adjusting mechanism 76.
Referring now to FIG. 6, therein illustrated is the device 10 in a
position of use on a vehicle seat with the bottom panel 22 resting
on the seat bottom cushion 14 and the back panel 24 resting on the
seat back cushion 16. A child C (illustrated in phantom line) is
disposed within the seat 20, and a conventional seat belt 12
secures the device 10 to the vehicle seat (or vehicle frame).
Secured to each sidewall panel 26, and as illustrated the outer
surface of each intermediate sidewall panel portion 26a, are upper
and lower passageways 96, one disposed above and forward of the
bracing means 50 and one disposed below and behind the bracing
means 50. These passageways 96 are formed of a relatively hard
non-inflatable material and are configured and dimensioned to allow
passage therethrough of one end of a seatbelt 12 so that the
seatbelt end may be passed through the lower and then upper
passageways 96 of one side panel 26, passed in front of the stomach
of the child, threaded through the upper and then lower passageways
96 of the other side panel 26, and then secured to the other end of
the seatbelt 12 by a conventional seatbelt buckle 98, thereby to
secure the device 10 to the vehicle seat. The passageways 96 also
serve as convenient handles which enable the device 10 to be
transported from one location to another--for example, from a house
to the vehicle.
When the vehicle comes to an abrupt stop, inertia causes the device
10 to continue to move in the prior direction of motion of the
vehicle (typically, forwardly). This has the same effect as if the
seatbelt 12 were suddenly tightened. As the portions 26a of the
sidewall panels disposed intermediate the bracing means 50 and the
seatbelt 12 are more flexible than the bracing means 50, the
tightening seatbelt 12 will cause the aforementioned upper
intermediate sidewall portions 26a to fold inwardly and downwardly
towards each other so that they will more closely cradle and now
also cover the child C within the seat, thereby to briefly limit
its movement and shield it from flying glass and like debris during
the instant of the accident, even though the child's comfort may
briefly suffer due to the closer restraints.
Referring now to FIGS. 6, 8 and 10, therein illustrated is the
device 10 in normal use. By way of contrast, FIGS. 7, 9 and 11 are
similar views illustrating the device 10 during an abrupt stop in
the forward motion of the vehicle (as might occur during a head-on
collision). Relative to FIGS. 6, 8 and 10, FIGS. 7, 9 and 11 show
the upper portion of back panel 24 moving away from the back
cushion seat 16 and somewhat forwardly and downwardly toward the
bottom panel 22. Such motion, especially such motion of the lower
portion of back panel 24, is limited by the presence of the bracing
means 50 within each sidewall panel 26. Furthermore, the upper
connecting sidewall portion 26a of each sidewall panel 26, under
and adjacent to the seatbelt 12, as well as adjacent portions of
the back and bottom sidewall portions 30, 32, buckle somewhat and
are drawn inwardly towards the other by the seatbelt 12 to further
limit movement of the child within under the inertial forces of the
abrupt stop and to further cushion and protect the child from
flying glass, debris and the like.
If desired, a length adjusting mechanism 101 may be provided for
the second strap means portion 62c just as the mechanisms 72 and 76
are provided for the first strap means 60 and the second strap
means portions 62a, 62b.
The device 10 is simple to use. To inflate the seat 20, air is
introduced under pressure via valve 40, either by blowing into it
or by using hand, foot or electrically operated pumps. Inflation is
completed when the ends of the bracing means 50 reach the convexly
rounded shape illustrated in FIG. 2 as a result of the air
introduced through valve 40 eventually passing through the
collapsible valve 50a. Alternatively, where the embodiment lacks
the collapsible valve 50a and utilizes a two-way
inflation/deflation valve for the bracing means 50, the
inflation/deflation valves may be used to inflate the bracing means
50.
Once inflated, the device 10 may be transported to a car using the
upper passageways 96 as handles for carrying the same. Once in the
car, the first and second fixture means or buckles 70, 74 are
activated to release the various portions thereof. After the child
is placed within the inflated seat 20, the first strap means 60 is
secured about the chest of the child, with the functional end
portions thereof being secured by the first buckle 70. The second
strap means portion 62a is disposed between the legs of the child,
and the second strap means portions 62b are disposed over the
shoulders of the child, and the second strap means portions 62c are
disposed over the thighs of the child. The various members 80, 82
of the second buckle 74 are then secured together. This procedure
insures that the child will be maintained within the device 10, and
more particularly intermediate the sidewall portions 26 thereof,
even in the event of an accident. Finally, one end of seatbelt 12
is threaded through the lower and then upper passageways 96 of one
sidewall panel 26, passed in front of the stomach of the child,
threaded through the upper and then lower passageways 96 of the
other sidewall panel 26, and then secured to the other end of the
seatbelt 12 by the seatbelt buckle 98.
When the device 10 is not in use, it may be easily deflated using
the one-way deflation-only valves 50b (or the two-way bracing means
valves, if present) to deflate the bracing means 50 and the two-way
inflation/deflation valves 40 to deflate the remaining portions of
the inflated seat 20. Deflation may be accomplished by manual
squeezing of the parts involved or by the use in reverse of any of
the pump-like mechanisms described in connection with the inflation
process, i.e., as deflation pumps.
While the inflatable portions of the seat may be formed of nylon or
other material affording sufficient strength and gaseous
impermeability to meet rigorous safety standards, the upper surface
of the bottom panel 22 and the inner surface of the sidewall panels
26 above the bottom panel 22 may be padded or lined with a material
which will afford greater comfort to the child within the seat than
nylon or plastic by itself. For example, the lining may be formed
of a soft, breathable fabric.
Referring now to FIG. 12, an alternative embodiment 10' of the
device is intended to be relatively permanently installed in a
vehicle. It is similar to the first embodiment 10, except that it
incorporates auxiliary passageways 96 projecting outwardly and
rearwardly from each sidewall panel 26 or opposite sides of the
back panel 24. One end of a normal seatbelt 12 would be passed
through the auxiliary passageways 96' and secured to the other
seatbelt end by the seatbelt buckle 98, thereby to relatively
permanently secure the device 10' to the vehicle seat. Both parts
of an auxiliary seatbelt 12' are secured to the main seat belt 12
or vehicle seat (or frame) and then one end is threaded through the
main passageways 96 and joined with the other auxiliary seatbelt
end by the buckle of the auxiliary seatbelt 12'. This permits the
device 10' to remain in position on the vehicle seat regardless of
whether or not the auxiliary seatbelt 12' has been left open when
not in use by the child.
To summarize, the present invention provides a child vehicle seat
device which, under normal driving conditions, provides the maximum
level of comfort to the child within, yet affords a maximum level
of protection for the child within, regardless of its comfort,
during the instant of the accident. The device is lightweight,
easily and compactly stored when not in use, economical to
manufacture, and easy to maintain.
Now that the preferred embodiments of the present invention have
been shown and described in detail, various modifications and
improvements thereon will become readily apparent to those skilled
in the art. Accordingly, the spirit and scope of the present
invention is to be construed broadly and limited only by the
appended claims, and not by the foregoing specification.
* * * * *